SEO: Comprehensive optimization — pricing metadata, FAQ schemas, comparison & Pushpay pages, homepage FAQ, repo housekeeping

[felixztang]

Closes #18

Changes

Pricing Page (Task 1 & 7)

• Updated app/pricing/layout.tsx with improved title, description, keywords, and FAQSchema

Switch Page CTR Improvements (Task 2)

• Rewrote titles/descriptions in lib/migration-urls.ts for better CTR
• • Updated OG/twitter titles in churchtrac, tithely, and planning-center pages

FAQPage Structured Data (Task 3)

• Created components/seo/faq-schema.tsx component
• • Added FAQSchema to all 3 existing switch pages + new pushpay page

Homepage FAQ (Task 4)

• Created components/sections/homepage-faq.tsx with 6 FAQ items and accordion UI
• • Added HomepageFAQ to app/page.tsx

Blog Time Elements (Task 5)

• Replaced <span> with <time dateTime={...}> in app/blog/[slug]/page.tsx

WebSite Schema (Task 6)

• Added WebSite schema with SearchAction to components/seo/structured-data.tsx

New Pages (Task 8)

• Created app/compare/page.tsx — comparison hub with feature matrix across 5 platforms
• • Created app/switch/pushpay/page.tsx — Pushpay alternative migration page
• • Added Pushpay platform data to data/migrations.ts
• • Updated public/sitemap-pages.xml with /compare/ and /switch/pushpay/

AI Page Title (Task 9)

• Updated title and description in app/ai/page.tsx

GitHub Repo Housekeeping (Task 10)

• Added repo description, website URL, and topics (church-management, ai, nextjs, church-software, saas)

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Note: This branch has merge conflicts with main because PR #19 (seo-schema-and-blog-fixes) was merged after this branch was created. The conflicts are in shared files — this PR includes the superset of all changes and should be resolved by accepting this branch's versions.